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Tidy pdf-attach-file example

This commit is contained in:
m-holger 2022-02-20 16:49:31 +00:00 committed by Jay Berkenbilt
parent 56b4d5a610
commit 527810e939
1 changed files with 14 additions and 6 deletions
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20
examples/pdf-attach-file.cc
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@ -11,7 +11,8 @@
// This example attaches a file to an input file, adds a page to the
// beginning of the file that includes a file attachment annotation,
// and writes the result to an output file. It also illustrates a
// number of new API calls that were added in qpdf 10.2.
// number of new API calls that were added in qpdf 10.2 as well as
// the use of the qpdf literal syntax introduced in qpdf 10.6.
//
static char const* whoami = 0;
@ -24,8 +25,8 @@ static void usage(std::string const& msg)
<< " --infile infile.pdf" << std::endl
<< " --outfile outfile.pdf" << std::endl
<< " --attachment attachment" << std::endl
<< " [ --password infile-password ]" << std::endl
<< " [ --mimetype attachment mime type ]" << std::endl;
<< " [--password infile-password]" << std::endl
<< " [--mimetype attachment mime type]" << std::endl;
exit(2);
}
@ -90,9 +91,16 @@ static void process(char const* infilename, char const* password,
"0 0 20 20 re\n"
"S\n");
auto apdict = ap.getDict();
apdict.replaceKey("/Resources", QPDFObjectHandle::newDictionary());
apdict.replaceKey("/Type", QPDFObjectHandle::newName("/XObject"));
apdict.replaceKey("/Subtype", QPDFObjectHandle::newName("/Form"));
// The following four lines demonstrate the use of the qpdf literal syntax
// introduced in qpdf 10.6. They could have been written as:
// apdict.replaceKey("/Resources", QPDFObjectHandle::newDictionary());
// apdict.replaceKey("/Type", QPDFObjectHandle::newName("/XObject"));
// apdict.replaceKey("/Subtype", QPDFObjectHandle::newName("/Form"));
// apdict.replaceKey("/BBox", QPDFObjectHandle::parse("[ 0 0 20 20 ]"));
apdict.replaceKey("/Resources", "<< >>"_qpdf"");
apdict.replaceKey("/Type", "/XObject"_qpdf);
apdict.replaceKey("/Subtype", "/Form"_qpdf);
apdict.replaceKey("/BBox", "[ 0 0 20 20 ]"_qpdf);
auto annot = q.makeIndirectObject(
QPDFObjectHandle::parse(